TY - BOOK ED - National Hockey League. TI - The official rules of the NHL SN - 1572432195 AV - GV847.5 .O32n 1997 PY - 1997/// CY - Chicago PB - Triumph Books KW - Hockey KW - Rules N2 - Rules on creating a proper rink, equipment, officiating and playing professional hockey UR - http://www.archive.org/details/officialrulesofn00nati UR - http://www.openlibrary.org/books/OL24558436M ER -